Multi-antenna channel estimation method based on polyphase decomposition
    41.
    发明授权
    Multi-antenna channel estimation method based on polyphase decomposition 有权
    基于多相分解的多天线信道估计方法

    公开(公告)号:US08654879B2

    公开(公告)日:2014-02-18

    申请号:US13387308

    申请日:2010-11-02

    IPC分类号: H04B7/02

    摘要: A multi-antenna channel estimation method based on polyphase decomposition includes: receiving frequency domain received signals transformed using discrete fourier transformation (DFT) in pilot symbols; performing phase correction on the frequency domain received signals; performing polyphase decomposition on the frequency domain received signals which are corrected using phase correction and acquiring polyphase signals; performing interpolation on the polyphase signals and acquiring the estimation values of the multi-antenna channel parameters with various linear combinations on each frequency; acquiring decorrelation array based on the pilot structure of the transmission antenna and decorrelating the estimation values of the multi-antenna channel parameters with various linear combination on each frequency using the decorrelation array and acquiring channel parameters of the pilot symbols on each frequency; acquiring channel parameters of data symbols based on the channel parameters of the pilot symbols. With the present invention, the inversion problem in multi-antenna channel estimation is avoided with lower complexity, and results of the multi-antenna channel estimation method become more accurate since the DFT and filtering are performed in the interpolation after polyphase decomposition.

    摘要翻译: 基于多相分解的多天线信道估计方法包括:在导频符号中接收使用离散傅立叶变换(DFT)变换的频域接收信号; 对频域接收信号进行相位校正; 对使用相位校正和获取多相信号校正的频域接收信号执行多相分解; 对所述多相信号执行插值,并且在每个频率上以各种线性组合获取所述多天线信道参数的估计值; 基于发射天线的导频结构获取解相关阵列,并使用解相关阵列在每个频率上用各种线性组合去除多个天线信道参数的估计值,并获取每个频率上的导频符号的信道参数; 基于导频符号的信道参数获取数据符号的信道参数。 利用本发明,以更低的复杂度避免了多天线信道估计中的反转问题,并且由于在多相分解之后的内插中执行DFT和滤波,所以多天线信道估计方法的结果变得更加精确。

    TRANSFORMER CONTROL DEVICE AND METHOD BASED ON THREE-DIMENSIONAL ZONE DIAGRAM POLICY
    42.
    发明申请
    TRANSFORMER CONTROL DEVICE AND METHOD BASED ON THREE-DIMENSIONAL ZONE DIAGRAM POLICY 有权
    基于三维图形图的变压器控制装置和方法

    公开(公告)号:US20130076130A1

    公开(公告)日:2013-03-28

    申请号:US13414279

    申请日:2012-03-07

    IPC分类号: H02J3/00

    摘要: Disclosed is a transformer control device and method based on a three-dimensional zone diagram policy. The method includes: setting transformers, including a transformer A and a transformer B; collecting three-phase voltage data and three-phase current data in a power system; rectifying the collected three-phase voltage data and the three-phase current data; transferring the data to the latches in a time-transfer method; transferring the data to an A/D converter of a processor to convert analog signals to digital signals; constructing a three-dimensional zone diagram in the processor; determining transformer operating conditions according to positions of points formed by voltage, reactive power factor and substation load; and adjusting the transformers. This invention adopts a simple, easy and clear three-parameter control policy including voltage, power factors and substation loads, so as to simplify analysis of transformer operating conditions, realize optimal substation operation, reduce transformer loss, and increase economic benefits.

    摘要翻译: 公开了一种基于三维区域图策略的变压器控制装置和方法。 该方法包括:设置变压器,包括变压器A和变压器B; 在电力系统中收集三相电压数据和三相电流数据; 整流收集的三相电压数据和三相电流数据; 以时间传送方式将数据传送到锁存器; 将数据传送到处理器的A / D转换器,以将模拟信号转换为数字信号; 在处理器中构建三维区域图; 根据由电压,无功功率因数和变电站负载形成的点的位置确定变压器工作条件; 并调整变压器。 本发明采用简单,简单,明确的三参数控制策略,包括电压,功率因数和变电站负载,简化变压器运行状况分析,实现最佳变电站运行,减少变压器损耗,增加经济效益。

    Loudspeaker module
    43.
    发明授权
    Loudspeaker module 失效
    扬声器模块

    公开(公告)号:US08340337B2

    公开(公告)日:2012-12-25

    申请号:US12817194

    申请日:2010-06-17

    CPC分类号: H04R1/345 H04R1/403

    摘要: A loudspeaker module includes a hollow main body, two rotatable connecting portions, and two loudspeakers. The hollow main body includes two opposite sidewalls. Each of the opposite sidewall defines a first opening, an inner sidewall of the first opening defines an annular rotating slot. One end of the connecting portion extends an annular flange shaped corresponding to the rotating slot. The two rotatable connecting portions are respectively rotatably connected to the main body via the flange rotating about the rotating slot. Two loudspeakers are disposed in an end of the corresponding rotatable connecting portion away from the main body.

    摘要翻译: 扬声器模块包括中空主体,两个可旋转连接部分和两个扬声器。 中空主体包括两个相对的侧壁。 每个相对的侧壁限定第一开口,第一开口的内侧壁限定环形旋转槽。 连接部分的一端延伸成对应于旋转槽形成的环形凸缘。 两个可旋转连接部分分别经由围绕旋转槽旋转的凸缘可旋转地连接到主体。 两个扬声器设置在远离主体的相应的可旋转连接部分的端部。

    PILOT AND CHANNEL ESTIMATION METHOD FOR SDMA MIMO TRANSMISSION DOWNLINK
    44.
    发明申请
    PILOT AND CHANNEL ESTIMATION METHOD FOR SDMA MIMO TRANSMISSION DOWNLINK 有权
    用于SDMA MIMO传输下行链路的导频和信道估计方法

    公开(公告)号:US20120182964A1

    公开(公告)日:2012-07-19

    申请号:US13497150

    申请日:2010-11-02

    IPC分类号: H04W72/04

    摘要: A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.

    摘要翻译: 本发明提供了一种用于SDMA MIMO传输下行链路的导频和信道估计方法,该方法提供了保存正交试验资源的可能性; 发射天线域中不同用户的导频信号可以占用相同的时频资源,从而大大降低系统资源的导频开销; 该方法包括:对于采用SDMA预编码的MIMO传输下行链路,将预编码域中的用户占用的正交导频资源的数量作为可以发送的数据流的数量或空间维数 首先占用基站的发射端; 然后以与数据信号相同的方式对预编码域中的正交导频执行SDMA传输预编码,以获得发射天线域中用户的导频信号; 其中,预编码域中的用户的导频可以在频域或码域中正交,并且预编码域中的不同用户的导频可以相同或不相同; 发射天线域中不同用户的导频信号可以占用相同的时频资源。

    Speaker
    46.
    外观设计
    Speaker 有权

    公开(公告)号:USD607435S1

    公开(公告)日:2010-01-05

    申请号:US29334661

    申请日:2009-03-31

    申请人: Bin Jiang

    设计人: Bin Jiang

    SEMICONDUCTOR LASER PACKAGE
    47.
    发明申请
    SEMICONDUCTOR LASER PACKAGE 审中-公开
    半导体激光封装

    公开(公告)号:US20090190619A1

    公开(公告)日:2009-07-30

    申请号:US12363103

    申请日:2009-01-30

    IPC分类号: H01S5/024

    摘要: The present invention provides a semiconductor laser package including a heat sink, a laser bar with a plurality of lasers on the heat sink, an insulated layer arranged between said heat sink and said laser bar, a solder layer combining said insulated layer with said laser bar, and a clearance crossing said solder layer defined between adjacent lasers.

    摘要翻译: 本发明提供了一种半导体激光器封装,其包括散热器,在散热器上具有多个激光器的激光棒,布置在所述散热器和所述激光棒之间的绝缘层,将所述绝缘层与所述激光棒 以及在相邻激光器之间限定的焊料层的间隙。

    Transformer control device and method based on three-dimensional zone diagram policy
    48.
    发明授权
    Transformer control device and method based on three-dimensional zone diagram policy 有权
    基于三维区域图的变压器控制装置及方法策略

    公开(公告)号:US08981592B2

    公开(公告)日:2015-03-17

    申请号:US13414279

    申请日:2012-03-07

    摘要: Disclosed is a transformer control device and method based on a three-dimensional zone diagram policy. The method includes: setting transformers, including a transformer A and a transformer B; collecting three-phase voltage data and three-phase current data in a power system; rectifying the collected three-phase voltage data and the three-phase current data; transferring the data to the latches in a time-transfer method; transferring the data to an A/D converter of a processor to convert analog signals to digital signals; constructing a three-dimensional zone diagram in the processor; determining transformer operating conditions according to positions of points formed by voltage, reactive power factor and substation load; and adjusting the transformers. This invention adopts a simple, easy and clear three-parameter control policy including voltage, power factors and substation loads, so as to simplify analysis of transformer operating conditions, realize optimal substation operation, reduce transformer loss, and increase economic benefits.

    摘要翻译: 公开了一种基于三维区域图策略的变压器控制装置和方法。 该方法包括:设置变压器,包括变压器A和变压器B; 在电力系统中收集三相电压数据和三相电流数据; 整流收集的三相电压数据和三相电流数据; 以时间传送方式将数据传送到锁存器; 将数据传送到处理器的A / D转换器,以将模拟信号转换为数字信号; 在处理器中构建三维区域图; 根据由电压,无功功率因数和变电站负载形成的点的位置确定变压器工作条件; 并调整变压器。 本发明采用简单,简单,明确的三参数控制策略,包括电压,功率因数和变电站负载,简化变压器运行状况分析,实现最佳变电站运行,减少变压器损耗,增加经济效益。

    Recommending groups to create in a social networking system
    49.
    发明授权
    Recommending groups to create in a social networking system 有权
    推荐团体在社交网络系统中创建

    公开(公告)号:US08938512B2

    公开(公告)日:2015-01-20

    申请号:US13606000

    申请日:2012-09-06

    IPC分类号: G06F15/16

    摘要: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

    摘要翻译: 基于与用户相关的信息,社交网络系统建议一个或多个组为目标用户加入或创建。 目标用户的特征,连接到目标用户的用户的特征,社交网络系统中的候选组的特征可以用于识别用于推荐的组。 社交网络系统可以向目标用户提供问题,并且基于接收到的问题答案向目标用户推荐组。 例如,提供的问题的答案识别目标用户的一个或多个特征,其用于选择用于推荐的组。 此外,社交网络系统可以基于目标用户,附加用户和/或组的特征来推荐目标用户的附加用户添加或邀请给组。

    RECOMMENDING GROUPS TO CREATE IN A SOCIAL NETWORKING SYSTEM
    50.
    发明申请
    RECOMMENDING GROUPS TO CREATE IN A SOCIAL NETWORKING SYSTEM 有权
    推荐组织在社会网络系统中创建

    公开(公告)号:US20140067943A1

    公开(公告)日:2014-03-06

    申请号:US13606000

    申请日:2012-09-06

    IPC分类号: G06F15/16

    摘要: Based on information associated with users, a social networking system recommends one or more groups for a target user to join or to create. Characteristics of the target user, characteristics of users connected to the target user, characteristics of candidate groups in the social networking system may be used to identify groups for recommendation. The social networking system may provide questions to the target user and recommend a group to the target user based on received answers to the questions. For example, the answers to the provided question identify one or more characteristics of the target user, which are used to select a group for recommendation. Additionally, the social networking system may recommend additional users for the target user to add or invite to a group based on characteristics of the target user, the additional users, and/or the group.

    摘要翻译: 基于与用户相关的信息,社交网络系统建议一个或多个组为目标用户加入或创建。 目标用户的特征,连接到目标用户的用户的特征,社交网络系统中的候选组的特征可以用于识别用于推荐的组。 社交网络系统可以向目标用户提供问题,并且基于接收到的问题答案向目标用户推荐组。 例如,提供的问题的答案识别目标用户的一个或多个特征,其用于选择用于推荐的组。 此外,社交网络系统可以基于目标用户,附加用户和/或组的特征来推荐目标用户的附加用户添加或邀请给组。